I was ______ and all of my equipment ______ working well.

单项选择题He regards that book ______ one of the worst that he's ______ read.

单项选择题We' re so busy that no one in the office can ______ for any other work.

单项选择题His first book ______ next month is based on a true story.

单项选择题The girl must have been reading at this moment last Sunday, ______ she

单项选择题You ______ park here! For it is an emergency access.